Vulcanizing process.



PATENTED DEC. 4, 1906.

H. w. MORGAN. VULOANIZING PROCESS.

APPLICATION FILED NOV. 23,1905.

W m WM WITNESSES:

A TTORNE Y8 U TED STATES PATENT orrron;

HUBERT W. MORGAN-OF CLEVELAND, OHIO. vuLoAmzmePRocEss.

To all whom; it may concern:

Be it known that I, HUBERT W. MORGAN, a citizen ofthe United States, anda resident of Cleveland, in the county of Cuyahoga and State of Ohio,have invented certain new and useful Im rovements in VulcanizinProcesses, of W 'ch the following is a fulI, clear, and exactdescription.

My invention relates to vulcanizing, my more particular object being toapply the vulcanizing materia to comparative ypliable substances such aswould ordinarily be destroyed by the heat of vulcanization. I especiallydesire to apply a plastic material to particles of wood, paper, and thelike and so vulcanize' the plastic materials as to avoid injury u on theobjects to which they are thus app ied.

In carrying out the objects above stated I take rubber, gutta-percha, orother vulcanizable compound, dissolve the same so as to reduce it to aliquid or plastic condition, admix it with sulfur or subject it to theaction of some other vulcanizin agent, incorporate in it clay, whiting,meta lic oxids, old or reclaimed rubber, gumpontianak, and the like.

I then apply the compound thus formed to the object to be treated, andfinally heat the same to a comparativel low temperature for a shorttime, which ishes the vulcanization. It is well known that rubber,guttapercha, and other vulcanizable materials maybe dissolved inchloroform, bisulfid of carbon and other solvents and that the may thenbe admixed with any ordinary a loy employed in this art. After this inmy process the admixture receives an additional step of-treatment notheretofore emplo. ed to my knowled e in the art. I subject t e admixtureto t e action of ozone. I find that ozone is much more effective foroxidizin the admixture than is the ordinary oxygen 0 the aif sometimesused for this purpose.

I find that vulcanizable substances, such as rubber, when thus treatedare rendered exceedin ly adhesive to non-metallic surfaces. mass inbeing thus formed re uires considerably less time and only a smallproportion of the degree of heat generally required for completevulcanization. I find, too, that after vulcanization in this manner thehardness of the completed substance is equal to that .of the highestgrade of ordinary hard rubber and that the finished substance isSpecification of Letters Patent.

Application filed November 23, 1905. $rial No. 288.706.

reated in this manner the plastic Patented Dec. 4,1906.

capable of receiving a fine and brilliant polish.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.'

ceiver treated in accordance with my invention. Fig. 2 is a perspectiveview, (partly in section, of a comb-frame provide with a stren'thening-rib and ready to receive a coating of vulcanizable material; andFig. 3 is a cross-section through the finished comb after the latterreceives its coating of vulcanizable material. I

The back of the comb is shown at a and is provided with a kerf b, whichis filled with plastic vulcanizable material, such as rubber orguttapercha. After the vulcanization is com leted, as hereinafterdescribed, the materia filling the kerf acts as a stiffening-rib andgreatly strengthens the comb. By this means the frame of the comb may bemade of wood, the grain running crosswise. of the general length of theframe, as indicated in ig. 2, yet the frame as a whole giving the combsufficient strength for ordinary use. If preferred, the kerf' b may befil'le by a strip of wood the grain of which runs lengthwise of thecomb. After the comb-frame is completed, as indicated in Fig. 2, itreceives a coating or covering 6' of vulcanizable material. It is thenready to be laced in the vulcanizer, as hereinafter described. In thetelephone-receiver the casing c is made of wogd and the vulcanizingmaterial is shown at The articles being prepared as above described areplaced in a vulcanizer and subjected to a low degree of heat for acomparatively short time, after which they are removed. As aboveindicated, the tempera- Figure 1 is an elevation of a telephone-retureneed not be high enough to cause the wood to change color or to becomeweak- 10c.

ened or even to warp. Because of the low heat employed aper, leather,and many other substances gesides Wood ma beeffectively vulcanized.Before vulcanization the articles may be given fine smooth surfaces andthen treated to a coating of the comound above described. The coatingmay e comparatively thin. If desired, the articles after removal fromthe vulcanizer may be treated with a second or third coating and 1 1oreplaced in a vulcanizer, so that several con- I fluid to the action ofozone, and finally vulcentric coatin s of the vulcanized materialcanizing said fluid. ma. be forme In testimony whereof I have signed myaving thus described my invention, I name to this specification in thepresence of 5 crlaim as new and desiretnsecure by Letters twosubscribing witnesses.

atent The method herein described of vulcaniz- HUBERT MORGAN- ing, whichconsists in dissolving rubber, -Witnesses: gutta-percha or the like in asolvent fluid, I ALLAN T. BRINSMADE,

1o adding sulfur to said fluid, subjecting said I FRANK E. MINTER.

